"Walking away leaving them sitting in plain sight on the bank counter top."

I have never understood people who deliberately lose control over their keys every time they see a flat surface. Seems like not keeping your keys on you is a sure-fire way of losing them. I guess that's just me, though, as so many people keep doing it? (And, usually, asking if I can let them back after they walk through a locked door at work and only then realize that they left their keys behind...)